Accessory space

[DwightB]

@DwightB - Take note that this calculation is does not include the requirements of 903.2.9 that I also posted.

I don't have any one S-1 over 12,000 sq ft and the total of all S-1 does not exceed 24,000 sq ft.

 

[RLGA]

I don't have any one S-1 over 12,000 sq ft and the total of all S-1 does not exceed 24,000 sq ft.

Well, yes, you do. To be considered a fire area separating a Group S-1 occupancy from a Group B occupancy or between Group S-1 occupancies, the fire-resistance rating for the fire barrier must be 3 hours per IBC Table 707.3.10. Any openings must also be 3 hours per IBC Table 716.1(2).

 

[DwightB]

Well, yes, you do. To be considered a fire area separating a Group S-1 occupancy from a Group B occupancy or between Group S-1 occupancies, the fire-resistance rating for the fire barrier must be 3 hours per IBC Table 707.3.10. Any openings must also be 3 hours per IBC Table 716.1(2).

So, if I don't have any 3 hour walls separating the S-1 from other areas, it's basically all S-1 and 24,000 sq ft is the limit without sprinkler.

 

[classicT]

Well, yes, you do. To be considered a fire area separating a Group S-1 occupancy from a Group B occupancy or between Group S-1 occupancies, the fire-resistance rating for the fire barrier must be 3 hours per IBC Table 707.3.10. Any openings must also be 3 hours per IBC Table 716.1(2).

So, if I don't have any 3 hour walls separating the S-1 from other areas, it's basically all S-1 and 24,000 sq ft is the limit without sprinkler.

Correct (kind of). As it is all interconnected, and being that you have no 3-hr fire barriers, you have a single fire area that is well over 12,000sf. NFPA 13 system should be required. It is not all S-1, but the fire area would be inclusive of both the B and S-1.